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Bess [88]
3 years ago
13

An average score of 90 or above in an English course receives an A grade. A student has grades of 81, 87, 94, 93 on four tests.

Find the range of scores on the fifth test that will give the student an A grade. (Let the maximum score on each test be 100. Enter your answer using interval notation.)
Mathematics
1 answer:
Inessa05 [86]3 years ago
5 0

Answer:

95>=X <=100. More or equal to 95 or equal or less than 100.

Step-by-step explanation:

The Total of the first score is needed first

81+87+ 94+93=355

The total of this score

Let X be the 5TH score we are looking for

(355+ X)/5= 90

355+X= 450

X= 450-355

X= 95 the person needs to sore between 95 and 100 ( which is the highest possible score).

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Answer:

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Step-by-step explanation:

This question can be solved using fundamental counting principle which means to say that if there are "m" ways  of doing one thing and there are "n" ways of doing other thing then there are total "m*n" ways of doing other things.

For example: if there are 4 type of pens and 3 type of notebook then there are "4*3" ways to write on notebook using  the pens.

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Using the above mentioned principle we have

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Hence there are 6*6 = 36 ways of possible outcomes.

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Step-by-step explanation:

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